<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 2.为Echarts准备一个Dom -->
      <div id="main" style="width: 750px; height: 400px"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入echarts
import echarts from "echarts";
import _ from "lodash";

export default {
  data() {
    return {
      // 需要合并的数据
      options: {
        title: {
          text: "最近一年各支部党费缴纳情况",
        },
        legend: {
          data: ["教职工第一党支部", "教职工第二党支部"],
        },
        series: {},
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#E9EEF3",
            },
          },
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: [
          {
            boundaryGap: false,
            data: "",
          },
        ],
        yAxis: [
          {
            type: "value",
          },
        ],
      },
    };
  },
  created() {},
  // 此时,页面上的元素,已经被渲染完毕了
  async mounted() {
    // 3.基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById("main"));
    // 调用showLoading方法
    myChart.showLoading({
      text: "loading",
      color: "#00F5FF",
      textColor: "#000",
      maskColor: "rgba(255, 255, 255, 0.2)",
      zlevel: 0,
    });
    
    const { data: res } = await this.$http.get("lastYearBranchDues");
    console.log(res);
    //if (res.meta.status !== 200) return this.$message('获取折线图数据失败!')
    // 4.准备数据项和配置项
    // 指定图表的配置项和数据
    // 数据合并
    //const result = _.merge(res.data, this.options)
    this.options.xAxis[0].data = res.x;
    this.options.series = res.yearDues;
    // 5.展示数据
    console.log(this.options);
    setTimeout(() => {
      // setOption前隐藏loading事件
      myChart.hideLoading();
      myChart.setOption(this.options);
    }, 1000).catch((err)=>{
      this.$message('获取折线图数据失败!')
    }
    );
  },
  methods: {},
};
</script>

<style lang="less" scoped>
</style>
